Setting servo speed in Arduino and Python

This is a problem when setting servos if something goes wrong. No reaction time before breakages occur.

Q1) For stand-alone Arduino - Is there a line of code I can add after "servotest.write(90);" to lower the speed of servo movement even to a quarter or a half of normal speed or is this too simple? I have been using the delay() command but I gather that doesn't affect the speed of movement only the delay between movements.

I am referring, of course, to servos which have not been modified for continuous rotation as we know you can't set these with Arduino then use them in MRL without re-setting or they spin like Dervishes. I'm just asking about the un-hacked servos.

Q2) In Python in MRL, what do I add to the code to change the speed of movement to the new position? Is there a simple way to do this with one line of added code?